1. National Center for Epilepsy, Oslo University Hospital, University of Oslo, Oslo, Norway;
2. Norwegian Institute of Public Health, Oslo, Norway;
3. Akershus University Hospital, Lørenskog, Norway;
4. Department of Global Public Health and Primary Care, University of Bergen, Bergen, Norway;
5. Muir Maxwell Epilepsy Centre, University of Edinburgh, Edinburgh, United Kingdom; and
6. Royal Hospital for Sick Children, Edinburgh, United Kingdom